Fig. 1. Composition of high speed scanning LiDAR system

Fig. 2. Off-target phenomena in high scanning speed LiDAR

Fig. 3. Schematic diagram of radial deviation

Fig. 4. Off-target spot trajectories in 45° rotating mirror and quadrangular tower mirror scanning modes

Fig. 5. Schematic diagram of axial deviation

Fig. 6. Equivalent optical system for close-range targets

Fig. 7. Relationship between radial deviation and light-receiving efficiency（n=75 Hz）

Fig. 8. Relationship between axial deviation and light-receiving efficiency under different conditions

Fig. 9. Experimental results of radial deviation and light-receiving efficiency under different conditions

Fig. 10. Experimental results of axial deviation and light-receiving efficiency under different conditions